Pulley Block - Assembly Set

Most Versatile & Economical set contains everything to teach the mechanical principle of pulleys. Comprises a set of components from which pulley blocks of many different configuration may be made up. This versatile set is an economical alternative to providing a similar range of options using separate discrete pulleys. Set contains 15 plastic pulley frames, 5 each of single, double and triple sheave, each provided with a removable bearing pin and a pair of hooks. 30 plastic plain bearing pulleys, 10 each of diameters 25, 38 and 50 mm